I am using this hibernate filters in my application too.. I can not say how easy it is. I have used this strategy: 1. My users has a Company_id column. 2. When they login on my application I set this Filter parameter (company_id) fro all my relevant entities.. done... from now, each single query, collection, etc.. is automaticaly added with a " and company_id = ? " expression on where clause.. I got some problems configuring it because there is some tricks defining the filter parameter value... but after solve that, my world becomes even easier. :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4048775#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...